tools for drilling through rock in tunnels, specifically designed

Despite their numerous benefits, the use of fiberglass pipe fittings is not without its challenges. The initial cost might be higher than conventional materials, but the long-term savings in maintenance and replacement costs often outweigh this. Additionally, while they are generally resistant to environmental factors, exposure to UV radiation can weaken the material over time, necessitating protective coatings.

...
...

Designed to tackle the rigidity of granite, these drill bits are typically made from tungsten carbide, a material known for its extreme hardness and wear resistance. The bit's tip is often crafted with a sharp, multifaceted point that helps concentrate the drilling force, reducing skidding and increasing penetration accuracy. Additionally, the flute design is engineered to efficiently remove granite dust from the drill site, preventing clogging and extending the bit's lifespan.

...

FRP pipes are a testament to the evolution of technology in the construction industry. They are designed to withstand harsh environmental conditions, corrosion resistance being one of their standout features. Unlike traditional metal pipes, they do not corrode, rust or leach, making them ideal for applications in acidic, alkaline, or chemically aggressive environments. This characteristic alone significantly extends their lifespan and reduces maintenance costs over time.

...